EP3409332A1 - Rear ski touring binding device with ski brake locking device - Google Patents

Abstract

The present invention relates to a rear device (1) for fixing a touring ski, said rear device (1) comprising:
∘ a base (2),
∘ a heel (3) rotatably mounted around a pivot (31) between a down position and a hiking position,
A braking device (4) movable between a braking position and a folded position,
A locking device (5) configured to hold the braking device (4) in the folded position,
the locking device (5) comprising:
A movable locking lever (7) on the base (2) between a locking position where said pull tab (7) blocks the braking device (5) in the folded position and a release position where said pull tab (7) leaves a free position the braking device (5),
An elastic element (8) configured to constrain the pull tab (7) in the locking position,
the heel (3) and the locking device (5) being configured with each other so that:
When the heel (3) is in the down position, the pull tab (7) is held in the release position and the elastic element (8) is compressed,
∘ when the heel (3) is in the hiking position, the pull tab (7) is released and the elastic member (8) pushes said pull tab (7) in the locking position.

Description

The invention relates to the field of ski bindings and more particularly to a back ski mount device comprising a ski brake locking device.

Rear ski binding devices and in particular those for hiking, generally comprise braking devices to brake or stop the ski, so that it does not fall down a slope itself and is lost or difficult to recover. Generally, these braking devices are folded when the heel of a ski boot is inserted into the rear fastening device. As regards ski mount bindings, this is the case when the rear fixing device is in a so-called downhill position. However, when the rear mount hiking device is in a so-called hiking position, the heel of the ski boot is free and does not hold the braking device. This can hinder the hiker's progress.

In the state of the art, there is known a device for locking the braking device. For this the heel of the rear fixing device comprises a contact surface which comes directly into contact with the braking device to lock it when the binding is in the hiking position. However this known solution is not ideal because a direct contact is made during the rotation of the heel and involves forces and plastic deformation at the contact surfaces between the heel and the braking device. This can lead to wear and even deterioration during the life of the fastener, or even breakage that may make the locking device ineffective.

According to another solution of the state of the art, the locking device comprises a hook movable about an axis of rotation. This hook is retracted in the down position and deployed in the hiking position. During the passage of the heel in the hiking position, the hook and deployed by a decline of said heel to the back of the ski board, which releases the hook. This solution is not ideal because it requires a complex mechanism that includes a rearward movement of the entire heel. In addition the hook can easily be blocked by snow or ice in use.

One of the aims of the present invention is therefore to at least partially overcome the drawbacks of the prior art and to provide an improved rear fixing device, in particular at its locking device of the braking device.

• ∘ une base destinée à être fixée sur une planche de ski,
• ∘ une talonnière montée rotative autour d'un pivot entre une position de descente dans laquelle elle est destinée à maintenir le talon d'une chaussure de ski et une position de randonnée dans laquelle le talon de la chaussure de ski est libre,
• ∘ un dispositif de freinage mobile entre une position de freinage et une position repliée,
• ∘ un dispositif de verrouillage configuré pour maintenir le dispositif de freinage en position repliée,

le dispositif de verrouillage comportant :

• ∘ une tirette de verrouillage mobile sur la base entre une position de verrouillage où ladite tirette bloque le dispositif de freinage en position repliée et une position de libération où ladite tirette laisse libre le dispositif de freinage,
• ∘ un élément élastique configuré pour contraindre la tirette en position de verrouillage,

la talonnière et le dispositif de verrouillage étant configurés l'un avec l'autre de sorte que :

• ∘ lorsque la talonnière est en position de descente, la tirette est maintenue en position de libération et l'élément élastique est comprimé,
• ∘ lorsque la talonnière est en position de randonnée, la tirette est libérée et l'élément élastique repousse ladite tirette en position de verrouillage.

The present invention therefore relates to a rear ski mount attachment device, said rear device comprising:

• ∘ a base intended to be fixed on a ski board,
• A heelpiece rotatably mounted around a pivot between a downhill position in which it is intended to hold the heel of a ski boot and a hiking position in which the heel of the ski boot is free,
• A braking device movable between a braking position and a folded position,
• A locking device configured to hold the braking device in the folded position,

the locking device comprising:

• A movable locking latch on the base between a locking position where said pull tab locks the braking device in the folded position and a release position where said pull tab leaves the braking device free,
• An elastic element configured to constrain the pull tab in the locking position,

the heel and the locking device being configured with each other so that:

• When the heel is in the down position, the pull tab is held in the release position and the elastic element is compressed,
• ∘ when the heel is in the hiking position, the pull tab is released and the elastic member pushes said pull tab in the locking position.

According to one aspect of the invention, the pull is movable in translation along the longitudinal axis of the ski board, the pull being in the locking position when it is advanced towards the front of the ski board and in the release position when it is pushed towards the rear of the ski board.

According to another aspect of the invention, the pull tab is disposed between a support integral with the pivot and the heel, said support having an opening through which said pivot and the pulling lever having an oblong orifice through which said pivot also passes, the braking device being also fixed on said support.

According to another aspect of the invention, the heel has a cam and that the pull tab comprises a pin, the cam being configured to come into contact with the pin and push the pull tab in the release position during the passage from the down position to the hiking position of said heel.

According to another aspect of the invention, the rear fixing device comprises a lid integral with the pivot and at least partially covering the pull.

According to another aspect of the invention, the cover is disposed between the pull and the heel, said cover having an opening through which the pivot.

According to another aspect of the invention, the pull tab comprises a gripping finger and the braking device comprises a holding surface facing away from the ski board, the gripping finger being configured to overcome the holding surface and lock the braking device in the folded position when the pull tab is in the locking position.

According to another aspect of the invention, the gripping finger comprises a chamfer configured to, when the pull tab is in the locking position, pushing said pull tab towards its release position during the passage of the braking device from its braking position to its folded position.

According to another aspect of the invention, in the release position, the gripping finger is covered by the cover and in the locking position, the gripping finger protrudes from the cover.

According to another aspect of the invention, the elastic element is disposed between the gripping finger is the cover.

• la figure 1 montre une représentation schématique en vue de dessus d'un dispositif arrière de fixation en position de descente,
• la figure 2 montre une représentation schématique en coupe et en vue de côté du dispositif arrière de fixation de la figure 1 en position de descente,
• la figure 3 montre une représentation schématique en vue de dessus d'un dispositif arrière de fixation en position de randonnée,
• la figure 4 montre une représentation schématique en coupe et en vue de côté du dispositif arrière de fixation de la figure 3 en position de randonnée,
• la figure 5 montre une représentation schématique en perspective d'une tirette.

Other features and advantages of the invention will emerge more clearly on reading the following description, given by way of illustrative and nonlimiting example, and the appended drawings among which:

• the figure 1 shows a schematic representation in plan view of a rear fixing device in the down position,
• the figure 2 shows a schematic representation in section and in side view of the rear fixing device of the figure 1 in the descent position,
• the figure 3 shows a schematic representation in plan view of a rear fixing device in the hiking position,
• the figure 4 shows a schematic representation in section and in side view of the rear fixing device of the figure 3 in a hiking position,
• the figure 5 shows a schematic representation in perspective of a zipper.

In the different figures, the identical elements bear the same reference numbers.

The following achievements are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Simple features of different embodiments may also be combined and / or interchanged to provide other embodiments.

In the present description, it is possible to index certain elements or parameters, for example first element or second element as well as first parameter and second parameter or else first criterion and second criterion, etc. In this case, it is a simple indexing to differentiate and name elements or parameters or criteria close but not identical. This indexing does not imply a priority of one element, parameter or criterion with respect to another, and it is easy to interchange such denominations without departing from the scope of the present description. This indexing does not imply either an order in time for example to appreciate this or that criterion.

• ∘ une base 2 destinée à être fixée sur une planche de ski,
• ∘ une talonnière 3 montée rotative autour d'un pivot 31 entre une position de descente (illustrée aux figures 1 et 2) dans laquelle elle est destinée à maintenir le talon d'une chaussure de ski et une position de randonnée (illustrée aux figures 3 et 4) dans laquelle le talon de la chaussure de ski est libre,
• ∘ un dispositif de freinage 4 mobile entre une position de freinage (illustrée aux figures 1 et 2) et une position repliée (illustrée aux figures 3 et 4), et
• ∘ un dispositif de verrouillage 5 configuré pour maintenir le dispositif de freinage 4 en position repliée.

The rear ski mount attachment device 1 illustrated in Figures 1 to 4 has:

• A base 2 intended to be fixed on a ski board,
• ∘ a heel 3 rotatably mounted around a pivot 31 between a down position (illustrated in FIGS. Figures 1 and 2 ) in which it is intended to hold the heel of a ski boot and a hiking position (illustrated in FIGS. Figures 3 and 4 ) in which the heel of the ski boot is free,
• A braking device 4 movable between a braking position (illustrated in FIGS. Figures 1 and 2 ) and a folded position (shown in Figures 3 and 4 ), and
• A locking device 5 configured to hold the braking device 4 in the folded position.

To move from one position to another, the heel 3 rotates about its pivot 31 of the order of 90 °, for example between 70 and 90 °.

The figure 1 shows the heel 3 in the down position. In this down position, the heel 3 is aligned with the longitudinal axis of the base 2.

The figure 3 shows the heel 3 in the hiking position. In this downward position, the heel 3 is rotated relative to the longitudinal axis of the base 2 with an angle of the order of 90 °, for example between 70 and 90 °.

During this rotation to move from one position to another, the position of the heel 3 and its pivot 31 remains fixed relative to the base 2. It is meant that the heel 3 and its pivot 31 do not move along the longitudinal axis of the base 2.

The base 2 is intended to be fixed on a ski board, for example by means of screws passing through through orifices provided on the base 2. The base 2 may also comprise a device for adjusting the position of the heel piece 3. This adjusting device may comprise a worm 21 extending along the longitudinal axis of the ski board. Only the screw head of the worm 21 is visible on the figures 1 and 3 . The worm 21 is connected to the pivot 31 and allows to translate the heel 3 forward or backward along the longitudinal axis of the ski board, to adapt the ski binding to the size of the shoe. The pivot 31 can in particular translate within a chamber 22 formed in the base 2.

The braking device 4 illustrated in Figures 1 to 4 comprises a sole 41 intended to come into contact with the heel of a ski boot. The sole 41 comprises in particular a pivot connection 43 with the rear fixing device 1 so that in the folded position the sole 41 is parallel to the plane of the ski board and in the braking position it is raised.

The braking device 4 also comprises pads 42 passing on either side of the rear fixing device 1 so that one of their ends can come into contact with the ground and the snow, in the braking position. The pads 42 also comprise a pivot connection 46 with the rear fixing device 1. This pivot connection 46 of the pads 42 is in particular placed between the two ends of said pads 42. The other end of the pads 42 is connected to the sole 41 is disposed in an elongate housing 44, oriented parallel to the plane of the sole 41. As illustrated on the figures 2 and 4 in the folded position, the ends of the shoes 42 can translate in the oblong housing 44 during the passage from one position to another.

A spring 45 is disposed within the elongate housing 44 so as to push the ends of the pads 42 in the braking position. Due to the pivot connection 43 of the sole 41 and the pivot connection 46 of the pads, the spring 45 allows the default position of the braking device 4 is its braking position. To go into the folded position, it is necessary to compress the spring 45, for example by pressing the sole 41 with the heel of the ski boot.

The locking device 5 allows in particular to maintain the braking device 4 in the folded position when the heel 3 is in the hiking position and even if the heel of the ski boot is no longer present.

The locking device 5 more particularly comprises a movable locking tab 7 on the base 2 between a locking position where said pull tab 7 blocks the braking device 5 in the folded position and a release position where said pull tab 7 leaves free the braking device 5. This pull tab 7 may in particular be movable in translation along the longitudinal axis of the ski board. The pull tab 7 is thus in the locking position when it is advanced towards the front of the ski board and in the release position when it is pushed towards the rear of the ski board.

However, it is quite possible to imagine other embodiments of the movement of the zipper 7. For example, the zipper 8 can be movable in translation along an axis perpendicular to the longitudinal axis of the ski board or to be mobile in rotation on the base 2.

The pull tab 7 may for example be made of metallic material. The figure 5 shows a perspective view of the zipper 7.

The pull tab 7 can be arranged between a support 51 and the heel piece 3. This support 51 is integral with the pivot 31 and has an opening 510 through which said pivot 31 passes and the pull tab 7 has an oblong hole 73 through which also passes said pivot 31. By integral with the pivot 31 is meant that the support 51 is translated with the pivot 31 when adjusting the heel 31 to adapt to the size of the shoe. The braking device 4 is also fixed on the support 51 so that it too is integral with the displacement in translation of the heel piece 31. This makes it possible to maintain a constant distance between the braking device 4 and the locking device 5.

The locking device 5 also comprises a resilient element 8, for example a spring, configured to constrain the pull tab 7 in the locking position.

In order to protect the pull tab 7, particularly from the accumulation of snow which could hinder its movement, the locking device 5 may also include a cover 52 secured to the pivot 31 and at least partially covering the pull tab 7. The cover 52 may thus be disposed between the pull tab 7 and the heel 3. The cover 52 also has an opening 520 through which the pivot 31 passes.

• ∘ lorsque la talonnière 3 est en position de descente, la tirette 7 est maintenue en position de libération et l'élément élastique 8 est comprimé, comme illustré à la figure 2,
• ∘ lorsque la talonnière 3 est en position de randonnée, la tirette 7 est libérée et l'élément élastique 8 repousse ladite tirette 7 en position de verrouillage, comme illustré à la figure 4,

The heel 3 and the locking device 5 are thus configured with each other so that:

• When the heel piece 3 is in the down position, the pull tab 7 is held in the release position and the elastic element 8 is compressed, as illustrated in FIG. figure 2 ,
• When the heel piece 3 is in the hiking position, the pull tab 7 is released and the elastic element 8 pushes said pull tab 7 to the locking position, as illustrated in FIG. figure 4 ,

For this, the heel 3 may comprise a cam 32 and the pull tab 7 comprise a pin 71. The cam 32 is then configured to come into contact with the pin 71 and push the pull tab 7 in the release position during the passage of the down position at the hiking position of said heel 3. The cam 32 can thus be disposed under the heel 3 facing the base 2, at the rear of said heel 3. By rear of the heel 3 is meant here its side oriented towards the heel of the ski board, when in the downhill position.

In order to ensure a catch between the locking device 5 and the braking device 4, the pull tab 7 can comprise a gripping finger 72 and the braking device 4 comprise a holding surface 47 facing away from the ski board. This holding surface 45 may more particularly be disposed on the sole 41. The gripping finger 72 is then configured to overcome the holding surface 47 and block the braking device 4 in the folded position when the pull tab 7 is in the locking position . In the release position, the gripping finger 72 can be positioned so that it is covered by the cover 52 and in the locking position, the gripping finger 72 protrudes from the cover 52 in order to overcome the holding surface. 47.

According to the example shown in figures 2 and 4 , the elastic element 8 can be disposed between the gripping finger 72 is the cover 52. However it is quite possible to imagine other locations of said elastic member without departing from the scope of the invention.

The gripping finger 72 can be made of material with the pull tab 7 where it can be a fixed element, for example by screwing, on said pull tab 7. This second solution allows in particular easier assembly when the elastic element 8 bears against the finger grip 72.

As illustrated on the figure 5 , the gripping finger 72 may comprise a chamfer 720 configured for, when the pull tab 7 is in the locked position, pushing said pull tab 7 towards its release position when the braking device 4 moves from its braking position to its position folded. The pull tab 7 is then pushed back under the effect of the elastic element 8 and the gripping finger 72 can overcome the holding surface 47.

Thus, it is clear that the locking device 5 according to the invention allows effective blocking of the braking device 4 in the folded position.

Claims (9)

Back device (1) for fixing a touring ski, said rear device (1) comprising: A base (2) intended to be fixed on a ski board, ∘ a heel (3) rotatably mounted around a pivot (31) between a lowering position in which it is intended to maintain the heel of a ski boot and a hiking position in which the heel of the ski boot is free, A braking device (4) movable between a braking position and a folded position, A locking device (5) configured to hold the braking device (4) in the folded position, characterized in that the locking device (5) comprises: A movable locking lever (7) on the base (2) between a locking position where said pull tab (7) blocks the braking device (5) in the folded position and a release position where said pull tab (7) leaves a free position the braking device (5), said pull tab (7) being movable in translation along the longitudinal axis of the ski board, the pull tab (7) being in the locking position when it is advanced towards the front of the ski board and in the release position when it is pushed towards the rear of the ski board, An elastic element (8) configured to constrain the pull tab (7) in the locking position, the heel (3) and the locking device (5) being configured with each other so that: When the heel (3) is in the down position, the pull tab (7) is held in the release position and the elastic element (8) is compressed, ∘ when the heel (3) is in the hiking position, the pull tab (7) is released and the elastic member (8) pushes said pull tab (7) in the locking position. Rear fixing device (1) according to claim 1, characterized in that the pull tab (7) is arranged between a support (51) integral with the pivot (31) and the heel piece (3), said support (51) comprising an opening (510) through which passes said pivot (31) and the pull (7) having an oblong hole (73) through which said pivot (31) also passes, the braking device (4) also being fixed on said support ( 51). Rear fixing device (1) according to one of the preceding claims, characterized in that the heel piece (3) comprises a cam (32) and that the pull tab (7) comprises a pin (71), the cam (32) being configured to come into contact with the pin (71) and push the pull tab (7) in the release position during the passage from the down position to the hiking position of said heel (3). Rear fixing device (1) according to one of the preceding claims, characterized in that it comprises a cover (52) integral with the pivot (31) and at least partially covering the pull tab (7). Rear fixing device (1) according to the preceding claim, characterized in that the cover (52) is arranged between the pull tab (7) and the heel piece (3), said cover (52) having an opening (520) through which passes the pivot (31). Rear fixing device (1) according to one of the preceding claims, characterized in that the pull tab (7) has a gripping finger (72) and the braking device (4) has a holding surface (47). facing away from the ski board, the gripping finger (72) being configured to overcoming the holding surface (47) and locking the braking device (4) in the folded position when the pull tab (7) is in the locking position. Rear mounting device (1) according to the preceding claim, characterized in that the gripping finger (72) comprises a chamfer (720) configured for, when the pull tab (7) is in the locking position, pushing said pull tab (7). ) to its release position during the passage of the braking device (4) from its braking position to its folded position. Rear fixing device (1) according to one of Claims 6 or 7 in combination with one of Claims 5 or 6, characterized in that, in the release position, the gripping finger (72) is covered by the cover (52) and that in the locking position, the gripping finger (72) protrudes from the cover (52). Rear fastening device according to one of Claims 4 or 5 in combination with one of Claims 7 to 9, characterized in that the elastic element (8) is arranged between the fastening finger (72) and the cover (52).

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